EP0965768B1 - Spannmutter - Google Patents
Spannmutter Download PDFInfo
- Publication number
- EP0965768B1 EP0965768B1 EP99810505A EP99810505A EP0965768B1 EP 0965768 B1 EP0965768 B1 EP 0965768B1 EP 99810505 A EP99810505 A EP 99810505A EP 99810505 A EP99810505 A EP 99810505A EP 0965768 B1 EP0965768 B1 EP 0965768B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nut
- gripping elements
- clamping
- clamping nut
- sections
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000018109 developmental process Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/028—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of an auxiliary bolt or threaded element whose action provokes the deformation of the main bolt or nut and thereby its blocking
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
Definitions
- the invention relates to a clamping nut, with a solid nut block, which is an internal thread, a machined and in end face aligned at right angles to the axis of the thread and has a peripheral surface, with clamping elements, each a radially extending and segment-shaped cutout form part of the nut block and the axial Secured by means of a clamping screw that can be operated parallel to the axis are resiliently tiltable.
- Tension nuts of this type are, for example, from SU-A-1 375 873, FR-A-668 722 and EP-A-0 609 286. Such clamping nuts are secured against loosening and exist essentially from a solid nut block.
- a lockable nut is known from DE-A-39 17 758 which has two jaw sections (12A, 12B), which are each formed by a radial slot (18). To the Fixing the nut these jaw sections are jammed creating an axial pressure by deforming these sections is produced.
- Nuts with clamping and locking devices are in a wide variety Designs known. The main distinction is made those with radial locking and those with axial Blocking. Through different manufacturing processes on one high accuracy of the thread in relation to the axial runout End face value. It is also required that the breakaway torques should be a multiple of the tightening torque. These requirements can be met with the standard designs radial locking systems can be achieved. Have these nuts usually two or more radial mounting plugs that are partly made of non-ferrous metal and at the same time with the Mother to be edited. These locking plugs are made after by tightening the nuts with the desired torque Blocked screws against the thread and reach one high degree of safety related to the breakaway torque. In many However, for technical reasons, radial locking is required not possible. To achieve an axial securing, the securing elements must be operated axially parallel. For this there are essentially two systems, but both with significant Disadvantages are connected.
- the securing is like the radial securing system by means of plugs acting radially on the thread.
- a 90 ° deflection is necessary in order to arrange the tightening screws axially parallel.
- the 90 ° deflection now usually happens through two systems, either have the axial tightening screws and the plug have a conical surface, which should transmit the power or there are versions, who have an eccentric clamp. Both versions are but unable to apply the necessary forces, to achieve the required breakaway torques. With unfavorable The breakaway element can tolerate the same as the tightening element his. As a result, in practice, aids, such as glue are required. In this case then usually all the effort for the security system useless.
- the second system uses the principle of axial bracing worked. This principle also applies to other technical components, for example in couplings, known and per se effective.
- the desired rigid nut block with a certain elasticity be provided. This happens in many forms. nuts with recesses in radial form in the inner diameter or in Outside diameter or inside and outside diameter market rates. To achieve further elasticity, too in addition to radial recesses, segmentations performed. These segmentations are said to be clamping ability enlarge.
- Clamping nuts according to this second system have in common that they each cover the entire radial circumference the mother always in some form against the basic block be tense.
- the invention has for its object a To create clamping nut of the type mentioned, which the above avoids disadvantages mentioned.
- the Clamping nut should therefore be a distortion of the flat surface and that Loosen by insufficient securing to a greater extent than hitherto prevented and it should also be produced inexpensively can be.
- the task is solved with a clamping nut that the clamping elements form at most 50% of the named part, in such a way that when axially securing on the clamping side at most 50% of the thread circumference in the originally manufactured Shape to be changed.
- the inventive The clamping nut thus essentially consists of a base nut block. Also on the clamping side are not with axial locking more than 50% of the original block and thread in the original manufactured shape changed. Would the clamping parts remove, the mother would be contrary to the prior art still functional over the entire length. In the active Clamping zone are thus from the original solid base block more than 50% unchanged.
- clamping elements there is an even number provided by clamping elements and seen in the circumferential direction these clamping elements are alternately in opposite axial Directions tilted.
- the clamping elements are then designed that a clamping element repels on the base block and the other gets dressed. The forces then lift each other on. There is a clawing of the clamping elements mutually in the thread, so that almost no internal forces transferred to the original nut block. It deals then a real blocking system and not the Jamming of two female parts, as with the common ones Versions.
- the clamping elements are tilted in a particularly suitable manner Way in that the clamping elements alternate with a Pressure or lag screw are provided.
- the part mentioned is in Arranged inside the mother.
- These clamping elements are preferred through two machined into the nut body radial inner grooves formed.
- the division of the tiltable Cutouts are preferably made through radial bores. This makes production particularly simple and inexpensive guaranteed.
- the clamping nut has one radial outer groove in which a sealing ring, preferably a labyrinth seal is used.
- a sealing ring preferably a labyrinth seal is used.
- Clamping nut 1 has a nut block 3 which has a bore 5 has an internal thread 7.
- a circumferential radial inner groove 9 divides the nut block 3 into a basic block 3a and a part 3b ( Figure 3).
- Part 3b is through radial grooves 11 and 10 divided into sections 12, 13 and 16. These sections are each with comparatively narrow webs 18 the base block 3a connected resiliently.
- the thread 7 is in an area 7a of the base block 3a and an area 7b of sections 12, 13 and 16. The subdivision occurs when the groove 9 is incorporated.
- the sections 12 each have a continuous center Threaded bore 29 into which a pressure screw 14 is inserted.
- These pressure screws 14 are with a suitable Allen key can be operated axially from the front 22 and lie according to FIG. 4 with an end face 14 'on a surface 30 of the groove 9.
- the pressure screws 14 becomes the respective section 12 repelled from the base block 3a and slightly around the web 18 tilted outwards.
- the threaded parts 7b of the sections 12 are thus on the external thread not shown here, for example jammed by a threaded spindle, such that the Locknut 1 can no longer be rotated.
- the sections 13 are also in the center with a Provide stepped bore 32 into which a lag screw 15 is inserted is which with its shaft in a threaded bore 31 of the Basic body 13 engages.
- a lag screw 15 When tightening the lag screws 15 the corresponding section 13 around the web 18 becomes the basic body 3a tilted out.
- the tilting motion is also axial, however opposite to that of the elements 12.
- jamming of the threaded area 7b with the external thread for example a threaded spindle instead.
- Sections 12 and 13 thus form clamping elements that can be operated from the front 22 are. As FIGS. 1 and 2 show, the same clamping elements are located 12 or 13 diametrically opposite.
- the arrangement of the clamping elements is preferably symmetrical and preferably is one Even number of clamping elements 12 and 13 is provided.
- the sections 12 and 13 claw each other in the thread, making it so good how no forces are transferred to the base block 3a.
- a total of four clamping elements 12 and 13 are provided.
- a version is also conceivable in which more, for example ten clamping elements are provided.
- a circumferential radial groove 19 ' can be worked into the peripheral surface 17 be in which a sealing ring 19, preferably a lamellar sealing ring is inserted.
- the clamping nut 1 forms then a sealing nut with the lamellar sealing ring 19 in the outer diameter of the surrounding, not shown here Can center the housing.
- the sealing ring 19 or the groove 19 ' can also be omitted.
- the above considerations also apply to the clamping nut 2 shown in FIGS. 5 to 8.
- This also has a nut block 4, which is cylindrical Has outer surface 21.
- the outer surface 21 can, however also polygonal, for example hexagonal.
- To put on the A plurality of grooves 28 are machined into the outer surface 21 of the clamping nut 2.
- the high-precision ground plane surface 23 is located 7 in relation to the front side 22, from which two pressure screws 14 and two tension screws 15 can be operated are.
- the tiltable sections 14b are located here inside the nut body 4 and is through two raidial grooves 34 and 35 formed, as Figures 7 and 8 clearly show. These two grooves cut a comparatively from the nut block 4 narrow area 4b out by four radial Bores 25 is divided into four sections 36.
- sections 36 have a threaded bore 26, into which a lag screw 15 is screwed.
- a pressure screw 14 is located in the other two sections 36 ' on, which is screwed into a threaded bore 27 of part 4c.
- the sections 36 and 36 ' lift or pressure loaded and thus in the opposite direction tilted.
- the clawing mentioned above is also here of the loaded sections guaranteed.
- the sections 4a and 4c of the nut block 4 become almost no internal Transfer forces.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
- Transmission Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Description
Claims (10)
- Spannmutter (1, 2), mit einem massiven Mutternblock (3, 4), der ein Innengewinde (7, 8), eine planbearbeitete und im rechten Winkel zur Achse des Gewindes (7, 8) ausgerichtete Stirnfläche (23) sowie eine Umfangsfläche (17, 21) aufweist, mit Klemmelementen (12, 13; 36, 36'), die jeweils einen sich radial erstreckenden und segementförmigen Ausschnitt aus einem Teil (3b; 4b, 4c) des Mutternblockes (3, 4) bilden und zur axialen Sicherung mittels einer achsparallel bedienbaren Klemmschraube (14, 15) federnd kippbar sind, dadurch gekennzeichnet, dass die Klemmelemente (12, 13; 36, 36') höchstens 50 % des genannten Teils (3b; 4b, 4c) bilden, derart, dass beim axialen Sichern auf der Spannseite höchstens 50 % des Gewindeumfangs in der ursprünglich gefertigten Form verändert werden, wobei die segmentförmigen Ausschnitte durch wenigstens eine innseitig in den Mutternkörper (3, 4) eingearbeitete Innennut (9, 34, 35) gebildet sind.
- Spannmutter (1, 2) nach Anspruch 1, dadurch gekennzeichnet, dass eine gerade Anzahl von Klemmelementen (12, 13; 36, 36') vorgesehen ist und dass in Umfangsrichtung gesehen diese Klemmelemente abwechselnd in entgegengesetzte axiale Richtungen verkippbar sind.
- Spannmutter (1, 2) nach Anspruch 2, dadurch gekennzeichnet, dass die Klemmelemente (12, 13; 36, 36') abwechselnd mit einer Druck- oder Zugschraube (14, 15) versehen sind.
- Spannmutter (1, 2) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass jeweils zwischen zwei Klemmelementen (12, 13) ein segmentförmiger und nicht spannbarer Abschnitt (16) des Mutternkörpers (3) angeordnet ist.
- Spannmutter (1, 2) nach Anspruch 4, dadurch gekennzeichnet, dass die nicht spannbaren Abschnitte (16) in Umfangsrichtung gesehen jeweils grösser sind als die spannbaren Klemmelemente (12, 13).
- Spannmutter (1, 2) nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass vier Klemmelemente (12, 13) und vier nicht spannbare Abschnitte (16) vorgesehen sind.
- Spannmutter (1, 2) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Klemmelemente (36, 36') im Innern des Mutternkörpers (4) angeordnet sind und diese Klemmelemente (36, 36') eine Dicke aufweisen, die wesentlich kleiner, vorzugsweise höchstens 50 % der Dicke eines äusseren Bereichs (4c) aufweist.
- Spannmutter (1, 2) nach Anspruch 7, dadurch gekennzeichnet, dass die Klemmelemente (36, 36') durch zwei innenseitig in den Mutternkörper (4) eingearbeitete Innennuten (34, 35) gebildet sind.
- Spannmutter (1, 2) nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Klemmelemente (36, 36') durch radiale Bohrungen (25) unterteilt sind.
- Spannmutter (1, 2) nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass sie eine radiale Aussennut (19') aufweist, in welche ein Dichtring (19), vorzugsweise ein Labyrihthdichtring eingesetzt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH130098 | 1998-06-16 | ||
CH130098 | 1998-06-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0965768A1 EP0965768A1 (de) | 1999-12-22 |
EP0965768B1 true EP0965768B1 (de) | 2002-09-25 |
Family
ID=4207221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99810505A Expired - Lifetime EP0965768B1 (de) | 1998-06-16 | 1999-06-09 | Spannmutter |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0965768B1 (de) |
AT (1) | ATE225004T1 (de) |
DE (1) | DE59902815D1 (de) |
ES (1) | ES2183498T3 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10252780B4 (de) * | 2002-11-07 | 2004-09-30 | Spieth-Maschinenelemente Gmbh & Co Kg | Gewindering |
DE102004003183A1 (de) * | 2004-01-22 | 2005-09-01 | Spieth-Maschinenelemente Gmbh & Co.Kg | Gewindering |
TWI461610B (zh) * | 2010-12-17 | 2014-11-21 | Yinsh Prec Ind Co Ltd | 複合鎖制之精密螺帽 |
JP5254397B2 (ja) * | 2010-12-09 | 2013-08-07 | 盈錫精密工業股▲ふん▼有限公司 | 多数パターンを有すロックシステムの精密ナット |
DE102017219848A1 (de) | 2017-11-08 | 2019-05-09 | Robert Bosch Gmbh | Gewindespindel |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3020521A1 (de) * | 1980-05-30 | 1981-12-03 | Emuge-Werk Richard Glimpel Fabrik für Präzisionswerkzeuge vormals Moschkau & Glimpel, 8560 Lauf | Spannmutter |
CA1313067C (en) * | 1988-06-02 | 1993-01-26 | Robert E. Geiger | Lockable nut for axial adjustment |
SE500229C2 (sv) * | 1991-10-02 | 1994-05-09 | Boerje Jansson | Låsande element |
FR2743121A1 (fr) * | 1995-12-29 | 1997-07-04 | Sfero | Organe filete d'assemblage |
-
1999
- 1999-06-09 EP EP99810505A patent/EP0965768B1/de not_active Expired - Lifetime
- 1999-06-09 ES ES99810505T patent/ES2183498T3/es not_active Expired - Lifetime
- 1999-06-09 AT AT99810505T patent/ATE225004T1/de not_active IP Right Cessation
- 1999-06-09 DE DE59902815T patent/DE59902815D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59902815D1 (de) | 2002-10-31 |
ES2183498T3 (es) | 2003-03-16 |
ATE225004T1 (de) | 2002-10-15 |
EP0965768A1 (de) | 1999-12-22 |
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